GhostRelay vs GridInbox

GhostRelay is a web service that creates email aliases and forwards their messages to a real inbox. Users can make random or custom aliases, monitor them, and disable or delete them from a dashboard. The free plan costs nothing, requires no credit card, and allows up to 20 aliases with unlimited forwarding, custom names, and enable or disable controls. Forwarded messages preserve the Reply-To header, and the service supports replying from an alias. Mail can be sent to any receiving address, including Gmail, Outlook, Yahoo, ProtonMail, and iCloud. Disabled aliases reject incoming messages and return a bounce to the sender. GhostRelay says email is processed in memory without disk or database storage and content is not retained. It describes TLS 1.3, AES-256, bcrypt hashing, and signed JWT authentication. Custom domains and a browser extension are available; mobile apps and a public API are not.

GridInbox is a shared email workspace for handling customer conversations sent to business addresses such as support@, sales@, and billing@. Team members can assign conversations, see who is handling them, and send or reply from the address where a message arrived. Its REST API can create and delete aliases, read messages, and send email programmatically. GridInbox also extracts one-time passwords and verification codes from incoming email for access through its dashboard or API. The Free plan costs nothing and includes five aliases, 10 outbound and 50 inbound messages per month, 512MB of storage, a 5 MiB attachment limit, and REST API access. Pro costs $19 a month and includes unlimited aliases, OTP extraction, 5GB storage, and up to three custom domains. Team costs $99 a month and includes five seats with role-based access control and up to 10 custom domains. GridInbox is designed for transactional and operational email; bulk marketing email is prohibited. It runs on the web and offers API access.